i use etrust ez av 6.125, formerly innoculateIT. how good is it?.. i think it is pretty good: it will usually not allow the downloading of viruses, and when it does, it actually strips them as they are downloading. it is updated almost every day, and uses few resources. i don't know how good it really is in comparison to other products. i guess if it does the job, that is all that matters. most reviews i read comparing various products do not seem reliable. someone serious with testing facilities and "know-how" is needed to verify how good various security programs really are. also, i am using kerio's 2.14 firewall, another program that does the job while using little resources.